Microbiology 4: Infection Cases

Question 1

What is the typical appearance of Pneumocystis Jiroveccii pneumonia on CT ?

Answer 1

Bilateral Widespread patchy consolidation with Ground glass opacity sparing the lung bases.

Question 2

Which sinus infections are poorly controlled diabetics more susceptible to ?

Answer 2

Rhinocerebral mucormycosis

A fungal infection that infects the sinuses and can invade into the frontal lobes of the brain

The fungi is called Mucor

Question 3

Which organisms are people with complement defficiency more susceptible to ?

Answer 3

Encapsulated organisms - Neisseria Meningitidis, Streptococcus Pneumoniae

Question 4

Which organisms are people with neutrophil deficiency more susceptible to ?

Answer 4

Staphylococcus infections

Question 5

Which organisms are people with T cell deficiencies more susceptible to ?

Answer 5

Candida
PCP
CMV
EBV

Question 6

Which indolent infections are more common in alcoholics ?

Answer 6

Actinomycetes lung/ brain abscesses

Question 7

Which histological feature is characteristic of actinomyces infections ?

Answer 7

Basophilic sulphur granules

Question 8

Which antibiotic is recommended for treatment of mild C.diff infections ?

Answer 8

Metronidazole

Question 9

Which antibiotic is recommended for treatment of severe C.diff infections ?

Answer 9

Vancomycin + metronidazole